4 Result(s)
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Article
Application of caustic method to determining stress intensity factor of compressive shear crack
The caustic method is applied to compressive shear experiment and used to detect the stress intensity factors of cracks prefabricated on plexiglass sample. Loading, friction of crack planes and influence among...
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Article
A study on relation between acoustic emission and characteristic displacement field on the sample with multi en echelon structures — The theoretic and experimental explorations of strain gap
Based on the phenomena that the deformation gap was observed before the great Tangshang earthquake, this paper discusses the strain gap according to test and theory. The (strain) patterns were recorded photogr...
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Article
An experimental study of the dynamic features of shadow areas of caustics in response to loading/unloading fracture
Using a plexiglass sample and by means of real-time holographic interferometry and shadow optical method of caustics, the different features of dynamic variation in stress (strain) field, plastic area and nucl...
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Article
Physical meaning and prediction efficiency of the load/unload response ratio of rocks in strain-weakening phase before failure
Rock experiment results indicate that the load/unload response ratio (LURR) of rocks expressed via strain energy may have singular or negative value after the stress in the rock reaches its maximum before rock...
